IBM 7947E3U User Manual page 48

The following illustration shows the jumper settings for switch blocks SW3 and SW4
on the Pass 9 level system board.
Table 6 on page 33 and Table 7 on page 33 describe the function of each switch on
SW3 and SW4 switch blocks on the Pass 9 level system board.
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System x3650 M2 Types 4199 and 7947: Installation and User's Guide
Table 5. System board jumpers (continued)
Jumper Jumper
number name
Notes:
1. If no jumper is present, the server responds as if the pins are set to 1 and 2.
2. Changing the position of the UEFI boot recovery jumper from pins 1 and 2 to pins 2 and
3 before the server is turned on alters which flash ROM page is loaded. Do not change
the jumper pin position after the server is turned on. This can cause an unpredictable
problem.
Jumper setting